Prices, which had been positive earlier in the session, fell following a report from Bloomberg, citing anonymous sources, that Saudi production would reach a record 10.8 million barrels per day in July.

“There was a headline out that the Saudis are producing at levels that are largely perceived to be above and beyond...that has been the death blow in the past couple minutes,” said Bob Yawger, director of energy futures at Mizuho in New York.

“It’s definitely a big number, bigger than expected. But keep in mind that any big Saudi production numbers have to take into consideration that cooling demand in Saudi is going to max out in this month, next month, and the month after that,” Yawger said.

Meanwhile, Eastern Libyan commander Khalifa Haftar’s forces have given control of oil ports to a separate National Oil Corporation (NOC) based in the country’s east.

The official state-owned oil company from the capital Tripoli, also called NOC, will no longer be allowed to handle that oil, in a move the Tripoli government said would deepen division.

The output losses follow a move by OPEC and other oil producers last week to increase supply by around 1 million barrels per day (bpd).

Prices have thus far reacted modestly to the prospect of higher OPEC production, partly because supply has tightened since 2017, and partly because it is not clear exactly how much extra oil will come on to the market or when.

Production problems at one of Canada’s largest oil sands facilities helped drive front-month U.S. crude to its highest premium above second-month futures since 2014.

Many analysts think markets will stay tight.

Bank of America Merrill Lynch (BoAML) said Brent could rise to $90 a barrel by the second quarter of 2019.

But BoAML said the effects of the global trade dispute between the United States and other major economies including the European Union and China were gradually taking effect.

The escalating trade fight has already led to sharp sell-offs in stock markets, especially in Asia.